Global Patent Index - EP 0866488 A1

EP 0866488 A1 19980923 - Manufacturing method of a high-pressure discharge lamp

Title (en)

Manufacturing method of a high-pressure discharge lamp

Title (de)

Herstellungsverfahren einer Hochdruckentladungslampe

Title (fr)

Procédé de fabrication d'une lampe à décharge à haute pression

Publication

EP 0866488 A1 19980923 (EN)

Application

EP 98104436 A 19980312

Priority

JP 6266197 A 19970317

Abstract (en)

An object is to provide a method for manufacturing a high-pressure discharge lamp (500) of the double-ended type having excellent resistance to high pressure and wherein the internal diameter (W) of the portion where the light-emitting section and side tube are adjacent can be reduced without restricting the maximum diameter (L) of the electrode on the side where it projects into the light-emitting section (3). An electrode assembly (105) is arranged within evacuated a glass bulb (2) such that the end of the electrode (102) where a coil (102b) is wound onto it is positioned within the light-emitting section (3). In this condition, the portion where the light-emitting section (3) and the side tube (4a,4b) are adjacent is heated by a burner (300). The internal diameter of the side tube (4a,4b) can thereby be formed with reduced-diameter section (7) which is not smaller than that of the electrode rod (102a) without restricting the diameter at the location of coil (102b). <IMAGE>

IPC 1-7

H01J 9/32; H01J 61/36; H01J 61/30; H01J 61/82; H01J 61/84

IPC 8 full level

H01J 9/32 (2006.01); H01J 61/30 (2006.01); H01J 61/36 (2006.01)

CPC (source: EP US)

H01J 9/326 (2013.01 - EP US); H01J 61/30 (2013.01 - EP US); H01J 61/368 (2013.01 - EP US); H01J 61/82 (2013.01 - EP US); H01J 61/84 (2013.01 - EP US)

Citation (search report)

  • [XY] FR 2100245 A5 19720317 - GEN ELECTRIC
  • [XAY] US 2244960 A 19410610 - HERBERT NELSON EVAN
  • [Y] US 5505648 A 19960409 - NAGASAWA MASAKAZU [JP], et al
  • [Y] US 4086075 A 19780425 - EKKELBOOM TJEPKE HENDRIK, et al
  • [PX] EP 0818804 A2 19980114 - KOITO MFG CO LTD [JP]
  • [PXPY] DE 19710204 A1 19971030 - KOITO MFG CO LTD [JP]
  • [DX] DATABASE WPI Section EI Week 9550, Derwent World Patents Index; Class X26, AN 95-387077, XP002067752 & PATENT ABSTRACTS OF JAPAN vol. 96, no. 2 29 February 1996 (1996-02-29)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 008, no. 161 (E - 257) 26 July 1984 (1984-07-26)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 008, no. 190 (E - 263) 31 August 1984 (1984-08-31)
  • [Y] PATENT ABSTRACTS OF JAPAN vol. 007, no. 186 (E - 193) 16 August 1983 (1983-08-16)

Designated contracting state (EPC)

DE FR IT NL

DOCDB simple family (publication)

EP 0866488 A1 19980923; EP 0866488 B1 20040303; CN 1169182 C 20040929; CN 1201994 A 19981216; DE 69822014 D1 20040408; DE 69822014 T2 20050310; KR 100334290 B1 20020620; KR 19980080366 A 19981125; TW 388059 B 20000421; US 6132279 A 20001017

DOCDB simple family (application)

EP 98104436 A 19980312; CN 98109299 A 19980317; DE 69822014 T 19980312; KR 19980009024 A 19980317; TW 87103832 A 19980316; US 3942498 A 19980316